i think he did a wonderful job. >> reporter: mitt romney will spend three of the first five post-debate days in this battleground state in strong republican territory. but even here they admit before the debate, they were worried. their enthusiasm for their candidate lukewarm. >> with romney, before last night, i said, we're about 50%, 55%. after last night we're at about 100%. >> i was really pleased with the outcome last night. i thought mr. romney was -- he has statistics that just poured out like niagara falls, didn't they? >> reporter: but obama advisers know their target audience is undecided and swing voters. they quickly rolled out this ad challenging romney's tax plan wouldn't hurt the middle class. >> are we going to hold the governor accountable for his fraudulent positions? yes, we're going to do that. >> reporter: romney supporters are convinced their candidate has changed the course of this campaign and some are changing their plans, too. >> i'm going to talk to anybody i can, i'm going to call people, i'm going to volunteer at the republican committee and do whatever i ca